After last week’s preseason game between the Baltimore Ravens and San Francisco 49ers, the two teams participated in joint practices over the next couple of days at Ravens’ facilities. New Raven Steve Smith joked he won the office pool because he didn’t engage in any fights during the three days the two teams practiced together. In fact, there were none at all.

The same can’t be said across the country, where the Oakland Raiders and Dallas Cowboys practiced against each other.

Tempers flared during one of the sessions and a skirmish broke out that wasn’t limited to just players. At the end of the video, shared by NBC 5’s Pat Doney, a few fans can be seen getting involved as action spilled over towards the fence.

Not surprisingly, additional security was placed near the scene of the fight.

They just brought for police officers over to where fight took place for more security in front of Raiders fans.